Emotional Contagion: Other People's Stress Can Change Your Brain
“Brain changes associated with stress underpin many mental illnesses including PTSD, anxiety disorders and depression,” says Bains, professor in the Department of Physiology and Pharmacology and member of the HBI. “Recent studies indicate that stress and emotions can be ‘contagious’. Whether this has lasting consequences for the brain is not known.”
The Bains research team studied the effects of stress in pairs of male or female mice. They removed one mouse from each pair and exposed it to a mild stress before returning it to its partner. They then examined the responses of a specific population of cells, specifically CRH neurons which control the brain’s response to stress, in each mouse, which revealed that networks in the brains of both the stressed mouse and naïve partner were altered in the same way.
The study’s lead author, Toni-Lee Sterley, a postdoctoral associate in Bains’ lab said, “What was remarkable was that CRH neurons from the partners, who were not themselves exposed to an actual stress, showed changes that were identical to those we measured in the stressed mice.”The researchers from left, the paper’s authors are: Tamás Füzesi, Nuria Daviu, David Rosenegger, Neilen Rasiah, Dinara Baimoukhametova, Toni-Lee Sterley (lead author), Jaideep Bains (principal investigator), and Agnieszka Zurek.
Credit: Adrian Shellard, Hotchkiss Brain Institute
The team discovered that the activation of these CRH neurons causes the release of a chemical signal, an ‘alarm pheromone’, from the mouse that alerts the partner. The partner who detects the signal can in turn alert additional members of the group. This propagation of stress signals reveals a key mechanism for transmission of information that may be critical in the formation of social networks in various species.
Another advantage of social networks is their ability to buffer the effects of adverse events. The Bains team also found evidence for buffering of stress, but this was selective. They noticed that in females the residual effects of stress on CRH neurons were cut almost in half following time with unstressed partners. The same was not true for males.
Bains suggests that these findings may also be present in humans. “We readily communicate our stress to others, sometimes without even knowing it. There is even evidence that some symptoms of stress can persist in family and loved ones of individuals who suffer from PTSD. On the flip side, the ability to sense another’s emotional state is a key part of creating and building social bonds.”
This research from the Bains lab indicates that stress and social interactions are intricately linked. The consequences of these interactions can be long-lasting and may influence behaviours at a later time.
In addition to Sterley and Bains, the paper’s other authors are Dinara Baimoukhametova, Tamás Füzesi, Agnieszka Zurek, Nuria Daviu, Neilen Rasiah and David Rosenegger.
The study was made possible through the generous contribution of longtime HBI donor Mr. Sanders Lee.
The research was supported by several funding sources including the Canadian Institutes for Health Research, Brain Canada, and Alberta Innovates.
Contacts and sources:
Kelly Johnston
Source:
Anyone can join.
Anyone can contribute.
Anyone can become informed about their world.
"United We Stand" Click Here To Create Your Personal Citizen Journalist Account Today, Be Sure To Invite Your Friends.
Please Help Support BeforeitsNews by trying our Natural Health Products below!
Order by Phone at 888-809-8385 or online at https://mitocopper.com M - F 9am to 5pm EST
Order by Phone at 866-388-7003 or online at https://www.herbanomic.com M - F 9am to 5pm EST
Order by Phone at 866-388-7003 or online at https://www.herbanomics.com M - F 9am to 5pm EST
Humic & Fulvic Trace Minerals Complex - Nature's most important supplement! Vivid Dreams again!
HNEX HydroNano EXtracellular Water - Improve immune system health and reduce inflammation.
Ultimate Clinical Potency Curcumin - Natural pain relief, reduce inflammation and so much more.
MitoCopper - Bioavailable Copper destroys pathogens and gives you more energy. (See Blood Video)
Oxy Powder - Natural Colon Cleanser! Cleans out toxic buildup with oxygen!
Nascent Iodine - Promotes detoxification, mental focus and thyroid health.
Smart Meter Cover - Reduces Smart Meter radiation by 96%! (See Video).